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dennisconover1971

New Member

• Apr 9, 2025

• #1

Hello, I received purchased a 1994 Discovery 1 with the 3.9 engine. I have quickly fallen for this vehicle and enjoy driving it. Recently my check engine light has come on. I checked the MAF sensor and now suspect the map sensor might be the issue. After searching for day for the location of the map sensor to no avail I am trying my luck on Land zone. So does anyone have any info on the location of the map sensor?

 

Rangieman123

Well-Known Member

• Apr 9, 2025

• #2

I'm almost certain that here is no MAP sensor on this system. The ECU uses a full range throttle potentiometer to determine a load signal. You will need to check for flash codes. The 14CUX ECU was a primitave unit so if you have an engine light it can only be of a basic nature. Have you got O2 sensors?

 

AllanWorms

Well-Known Member

• Thursday at 07:05

• #3

What is the code that triggered the check engine light?

Guessing is a waste of time.

 

sierrafery

Well-Known Member

• Thursday at 08:23

• #4

Rangieman123 said:

I'm almost certain that here is no MAP sensor on this system.

Click to expand...

+1, no MAP.... only 4 sensors: MAF, FT, ECT, TPS